Industrial Park Sewerage Masterplan

The challenge

A multi-phase industrial park development needed a sewerage masterplan that could be built out in stages without requiring rework as later phases connected in, while satisfying both sanitary capacity and stormwater attenuation requirements for the full build-out.

Our approach

• •Modeled sanitary flows and stormwater runoff for the full development at build-out, then reverse-engineered a phased network that would not need resizing as each phase connected.
• •Sized attenuation and control structures for the design storm return period required by the local authority.
• •Built a coordinated 3D model in Revit alongside the site civils team to resolve clashes with roads, utilities and building foundations before construction.
• •Produced a single masterplan drawing set referenced by each phase-specific construction package.

Outcome

• •Phase 1 construction proceeded without any sewerage rework required when Phases 2 and 3 connected in, avoiding the reopening of completed roadworks.
• •Stormwater attenuation sizing was approved by the local authority on first submission.
• •3D coordination caught two significant clashes with planned building foundations before they reached site.